Slight diversion - I promise I’ll stop soon:
In Keychain Access / login / passwords / (properties of) network passwords* for NAS / access control, should it be “confirm access for this item” or “allow all apps to access this item”?
*I have no idea why there are two entries for the same NAS, differing only in that one is named as the name of the NAS and the other as the IP of the NAS.
It's not well named – 'allow all apps' means everything can use the saved keychain. 'Confirm' locks it down.
For reasons best known to Finestre, the Demon of Such Things, computers names and SMB or AFP addresses are all treated individually and will have their own entries in the keychain (and elsewhere, like the Finder).
I like the new dock – it seems simple and elegant – and the death of skeuomorphism in general. Helvetica is failing to grow. It's awful at that size, the letters blur on the edge of illegibility against dark backgrounds – ye gads, look the aperture in 'e' (well, you can't, because it's closed up completely) and the way all the letters shuffle uncomfortably together like they're being herded for an embarrassing group photo. I'm sure it looks fine on a lush 5K display (actually I'm not, it's not great on a retina iPad). OK, I'm a once-upon-a-time designer and certified font nerd, and Lucida Grande wasn't exactly exciting but it was a robust and very legible UI font. Just because they've fallen in love with Helvetica Neue Light in their ads (and it does look good), scaling it down for use the OS isn't a terribly good design decision. I can live with it, but it lends a kind of amateurishness to the UI. That should be the kind of detail that detail that Apple focus on. I'd imagine it particularly awful for users with vision issues. To be honest, it's a bit dull too. Helvetica gets used everywhere. When you see fonts like Chicago and Lucida Grande you think Apple. You see Helvetica and think airport signage and cosmetic counters.
Stuttery sound is down to the Bluetooth*. Time to start nuking some settings.
(Yes, if you have multiple machines, just copy the downloaded installer from the Applications folder – before you run it, it deletes itself – to install on other machines.)
*edit: seems to be a common problem, so if you're reliant on playing audio via a Bluetooth link, you might want to be cautious about upgrading, it's unlistenable on my machine.
